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Cluster introduction Overview of Linux Cluster According to the function, it can be divided into two categories: high availability and load balancing. High availability clusters usually consist of two servers, one working and the other serving as redundancy. When the serving machine goes down, redundancy will take over and continue to serve. Op ...

Troubleshooting Gitlab-runner build failures: Causes of the problem: Automated build based on gitlab ci. job runs with errors when merge_requests request is initiated to start building. It is officially recommended to upgrade gitlab-runner version. Build runs with errors after version upgrade. The errors are as follows: Running with gitlab-run ...

18.1 Cluster Introduction Linux clusters are divided into two main categories based on their functions: high availability and load balancing High Availability Clusters usually consist of two servers, one working and the other serving as redundancy, which will continue to serve when the serving machine goes down. * Open source software for hi ...

Summary Before I said the domestic conscience of kodexplorer, today I say another good domestic open source project jumpserver, in addition to the domestic open source project I think it is the pagoda panel.Don't talk too much about the tutorial. Although you can read the following tutorial without listening to my nonsense http://docs.jumpserv ...

Preface Starting today, I'm going to roll up my sleeve and write Python crawlers directly. The best way to learn a language is to do it purposefully, so I'm going to do this with 10 + blogs.Hope you can do it well. In order to write the crawler well, we need to prepare a Firefox browser, also need to prepare the crawler tool, ...

Multiple instances In production, with the updating of database version or other requirements, it may be necessary to install multiple databases of different versions (or the same version) on one host. (The database here refers to an entire database separated by the database port number, rather than referring to the database in a database, pay ...

1. Basic concepts 1.keepalived is a software similar to layer3, 4 & 5 exchange mechanism, which is commonly referred to as Layer 3, Layer 4 and Layer 5 exchange.Keepalived is done automatically without manual intervention.2.Keepalived's function is to detect the state of the server. If a web server is down or fails to work ...

After installing the docker locally the other day and getting familiar with the commands, I still couldn't help but go through a wave of golang mirror deployments on centos. Here are my steps and some ideas.Prepare: A networked centos server with docker installed 1. Not to mention, write a Dockerfile (just want to experience the dockerfile proc ...

Telegram offers a wealth of API Let's develop a bot robot very conveniently. At the same time, Community The underlying API has also been encapsulated in various languages, so this paper uses node-telegram-bot-api To implement bot quickly Note: Due to the domestic network, Telegram bot needs to open the ladder and choose the global agent mode!! ...

Next, I'll give you a brief explanation of some basic optimization operations after the installation of Linux system. Note: This optimization is based on entOS (5.8/6.4). I will mention the cell size of 5.8 and 6.4 when they are optimized. Optimize entries: Modify ip address, gateway, host name, DNS, etc. Close selinux，Empty iptables Added ...